JPH0717365B2 - Oxide powder manufacturing equipment - Google Patents
Oxide powder manufacturing equipmentInfo
- Publication number
- JPH0717365B2 JPH0717365B2 JP61162778A JP16277886A JPH0717365B2 JP H0717365 B2 JPH0717365 B2 JP H0717365B2 JP 61162778 A JP61162778 A JP 61162778A JP 16277886 A JP16277886 A JP 16277886A JP H0717365 B2 JPH0717365 B2 JP H0717365B2
- Authority
- JP
- Japan
- Prior art keywords
- heat treatment
- treatment device
- coarse
- oxidized
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000843 powder Substances 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000008188 pellet Substances 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 13
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 description 15
- 230000003647 oxidation Effects 0.000 description 14
- 238000010298 pulverizing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011362 coarse particle Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 2
- 239000011802 pulverized particle Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012476 oxidizable substance Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Disintegrating Or Milling (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、焼結ペレットの酸化粉末製造装置に係り、焼
結ペレットを供給し、粉砕し、原料粗粒を作り、該原料
粗粒を搬送装置上で搬送かつ酸化し、微粉砕し、所定の
微粉末に分級し、製品缶に排出・計量する全ての動作を
自動的に行なうことができるようにした酸化粉末製造装
置に関する。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention relates to an apparatus for producing oxidized powder of sintered pellets, in which the sintered pellets are supplied and crushed to prepare raw material coarse particles, Oxidized powder production in which all the operations of conveying and oxidizing the raw material coarse particles on a conveying device, finely pulverizing them, classifying them into a predetermined fine powder, and discharging / measuring into a product can are performed automatically. Regarding the device.
（従来の技術） 従来における酸化粉末製造装置は、焼結ペレットの供
給、酸化および粉砕の各工程はバッチ式のため、各工程
がそれぞれ独立に操作されている。さらに酸化において
は焼結ペレットをそのまま酸化炉で酸化する方法が採ら
れている。(Prior Art) In a conventional apparatus for producing an oxidized powder, the steps of supplying sintered pellets, oxidizing and crushing are batch-type operations, and therefore each step is operated independently. Further, in the oxidation, a method of directly oxidizing the sintered pellet in an oxidation furnace is adopted.
（発明が解決しようとする問題点） ところが、従来の装置では、バッチ式のため連続的に処
理ができず、各工程がそれぞれ作業者に独立に操作され
ていた。また原子燃料焼結ペレットの場合には臨界管理
すなわちボートに充填できる原子燃料焼結ペレット処理
量に制限があり、さらにボート相互の間隔に一定距離を
保たねばならないため、取扱バッチ量が少なく、作業効
率が低かった。そのため、従来各工程を連結し自動化を
試みた方法が採られているが、装置の占有面積は大き
く、作業効率も低かった。また、酸化工程と分級工程を
組合せて同時に行なうものであったため、酸化粉末の粒
径が大きい場合、ふるいの目開きが小さいとふるい上に
上記酸化粉末が滞留して連続酸化できなくなる。一方、
ふるいの目開きを大きくすると、酸化が不完全な状態の
原料が製品に混入する。さらに、従来酸化炉内で酸化す
る際、焼結ペレットをそのままの状態で酸化していたた
め、酸化速度が遅い。(Problems to be Solved by the Invention) However, the conventional apparatus cannot perform continuous processing because it is a batch system, and each step is operated independently by an operator. Also, in the case of nuclear fuel sintered pellets, there is a limit to the criticality control, that is, the processing amount of nuclear fuel sintered pellets that can be filled in the boat, and since it is necessary to maintain a constant distance between the boats, the handling batch amount is small, The work efficiency was low. Therefore, conventionally, a method of connecting each process and attempting automation has been adopted, but the area occupied by the device is large and the work efficiency is low. Further, since the oxidation step and the classification step are combined and carried out at the same time, when the particle size of the oxide powder is large, if the mesh size of the sieve is small, the above-mentioned oxide powder stays on the sieve and continuous oxidation becomes impossible. on the other hand,
When the sieve opening is increased, raw materials in an incompletely oxidized state are mixed in the product. Further, when the conventional oxidation is performed in the oxidation furnace, the sintered pellets are oxidized as they are, so that the oxidation rate is slow.
本発明は、このような点に鑑みなされたもので、焼結ペ
レットを粗粉砕した後、酸化し、さらにその後微粉砕す
る工程を連続的に行なうことができる酸化粉末製造装置
を提供することを目的とする。The present invention has been made in view of the above circumstances, and provides an oxide powder manufacturing apparatus capable of continuously performing a step of coarsely crushing sintered pellets, then oxidizing, and then finely crushing the pellets. To aim.
（問題点を解決するための手段） 本発明は焼結ペレットの酸化粉末製造装置に係り、原料
焼結ペレットを粗粉砕するため粗粉砕機が設けられ、上
記粗粉砕機下方には、原料焼結ペレットを粗粉砕した粗
粉砕粒を酸化するための熱処理器が設けられている。ま
た、上記熱処理器内部には、原料焼結ペレットを粗粉砕
した粗粉砕粒を搬送するための搬送装置が設けられてお
り、さらに、上記搬送装置の終端部下方で、かつ熱処理
器外部に酸化された粗粉砕粒を微粉砕するための微粉砕
機が設けられていることを特徴とする。(Means for Solving Problems) The present invention relates to an apparatus for producing an oxidized powder of sintered pellets, which is provided with a coarse pulverizer for coarsely pulverizing raw material sintered pellets. A heat treatment device is provided to oxidize the coarsely crushed particles obtained by roughly crushing the bound pellets. Further, inside the heat treatment device, there is provided a transfer device for transferring the coarsely crushed particles obtained by roughly crushing the raw material sintered pellets, and further, below the end portion of the transfer device and outside the heat treatment device. A fine crusher for finely crushing the coarsely crushed particles is provided.
（作用） 焼結ペレットを酸化粉末する際、バランスローダによっ
て吊り下げられた原料供給缶内にはいっている焼結ペレ
ットを供給ホッパへ供給する。供給ホッパへ供給された
焼結ペレットは供給ホッパによって供給量を調整しなか
せら、供給フィーダを介して粗粉砕機へ供給される。粗
粉砕された焼結ペレットの粗粉砕粒は、熱処理器内で熱
処理器内に設けられた搬送装置によって搬送されながら
酸化される。酸化された焼結ペレットの粗粉砕粒はさら
に熱処理器下方に設けられた微粉砕機により、微粉砕さ
れ、分級機によって所定の粒度のものと所定外の粒度の
ものとに区別される。(Operation) When oxidizing the sintered pellets, the sintered pellets contained in the raw material supply can suspended by the balance loader are supplied to the supply hopper. The sintered pellets supplied to the supply hopper are supplied to the coarse crusher through the supply feeder without adjusting the supply amount by the supply hopper. The coarsely crushed particles of the coarsely crushed sintered pellets are oxidized in the heat treatment device while being conveyed by a conveyance device provided in the heat treatment device. The coarsely crushed particles of the oxidized sintered pellets are further finely crushed by a fine crusher provided below the heat treatment device, and classified by a classifier into particles having a predetermined particle size and particles having a particle size not specified.
（実施例） 以下、添付図面を参照して本発明の実施例について説明
する。Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明における一実施例について示した図であ
り、被酸化物を貯める原料供給缶１を吊り下げるための
バランスローダ２の下方に、供給量の均一を図るため供
給ホッパ３が設置されている。その供給ホッパ３の一側
下方には供給ホッパ３より吐出された被酸化物を供給す
るため供給フィーダ４が設置されており、さらに供給フ
ィーダ４の下方には粗粉砕機５が装着されている。ま
た、粗粉砕機５の下方には、熱処理器６が設置されてい
る。熱処理器６内部には粗粉砕機５により粉砕された被
酸化物を載置して、熱処理器６内を搬送するベルトコン
ベア７を有しており、さらに上記ベルトコンベア７の他
端下方かつ熱処理器６外部には微粉砕機８が設置されて
いる。また、微粉砕機８下方には分級機９が、さらに分
級機９下方にはフィーダ10が装着されている。また、フ
ィーダ10下方には製品缶11を載置し得る計量器12が床上
に設置されている。一方、所定外粒度の被酸化物を貯蔵
する取付け取外し可能な溜缶13が分級機９の一側下方に
設置される。また、粉砕された被酸化物が飛散しないよ
う、系を負圧に保つため、ブロア14および排気管15が熱
処理機６上方に、粗粉砕機５とは重ならない位置に設け
られている。さらに上述構造を有する系で、被酸化物が
飛散した時、外周部への漏洩を防止すめたる系全体を覆
うべくフード16が設けられている。FIG. 1 is a diagram showing an embodiment of the present invention, in which a supply hopper 3 is installed below a balance loader 2 for suspending a raw material supply can 1 for storing oxides, in order to make the supply amount uniform. Has been done. Below one side of the supply hopper 3, a supply feeder 4 is installed to supply the oxides discharged from the supply hopper 3, and below the supply feeder 4, a coarse crusher 5 is mounted. . Further, below the coarse crusher 5, a heat treatment device 6 is installed. Inside the heat treatment device 6, there is provided a belt conveyer 7 for carrying the oxidizable substance crushed by the coarse crusher 5 and carrying the inside of the heat treatment device 6, and further below the other end of the belt conveyer 7 and heat treatment. A fine crusher 8 is installed outside the vessel 6. A classifier 9 is installed below the fine crusher 8 and a feeder 10 is installed below the classifier 9. Further, below the feeder 10, a weighing machine 12 on which a product can 11 can be placed is installed on the floor. On the other hand, an attachable / detachable reservoir 13 for storing the oxide having a predetermined particle size is installed below one side of the classifier 9. A blower 14 and an exhaust pipe 15 are provided above the heat treatment machine 6 and at a position where they do not overlap the coarse crusher 5 in order to keep the system at a negative pressure so that the crushed oxides are not scattered. Further, in the system having the above-mentioned structure, the hood 16 is provided to cover the entire system, which prevents leakage to the outer peripheral portion when the oxide is scattered.
しかして、バランスローダ２によって、吊り下げられた
原料供給缶１から被酸化物である焼結ペレットが供給ホ
ッパ３内へ供給されると、その焼結ペレットは、供給フ
ィーダ４を介して粗粉砕機５内へ供給される。上記焼結
ペレットは粗粉砕機５により粗粉砕粒に粉砕されて熱処
理器６内に設けられたベルトコンベア７上に載置され
る。ベルトコンベア７上に載置された粗粉砕粒はベルト
コンベア７によって搬送されながら酸化される。熱処理
器６内で酸化された粗粉砕粒は熱処理器６内下方に設け
られた微粉砕機８内へ供給され、そこで微粉砕粒に粉砕
される。さらにその微粉砕粒は分級機９に供給され、所
定の粒度の製品粉末と、所定外粒度の製品粉末とに分級
される。分級された微粉砕粒のうち、所定粒度のもの
は、フィーダ10を介して製品缶11に供給され、一方、所
定外粒度のものは、溜缶13に供給される。Then, when the balance loader 2 supplies the sinter pellets to be oxidized into the supply hopper 3 from the suspended raw material supply can 1, the sinter pellets are coarsely crushed through the supply feeder 4. It is supplied into the machine 5. The sintered pellets are crushed into coarse crushed particles by a coarse crusher 5 and placed on a belt conveyor 7 provided in the heat treatment device 6. The coarsely crushed particles placed on the belt conveyor 7 are oxidized while being conveyed by the belt conveyor 7. The coarsely crushed particles oxidized in the heat treatment device 6 are supplied into the fine crusher 8 provided in the lower portion of the heat treatment device 6, and are crushed into fine crushed particles there. Further, the finely pulverized particles are supplied to a classifier 9 and classified into a product powder having a predetermined particle size and a product powder having a predetermined particle size. Among the classified finely pulverized particles, those having a predetermined particle size are supplied to the product can 11 via the feeder 10, while those having a predetermined outside particle size are supplied to the storage can 13.
第２図は焼結ペレットの酸化に対する粗粉砕効果を示す
図であり、酸化時間60分では、ペレット状態での酸化粉
末化割合は約60％＆であるのに対し、ペレットを5mm以
上に粗粉砕した後の酸化粉末化割合は、ほぼ100％にな
る。上述より焼結ペレットを粗粉砕した後、酸化するこ
とにより酸化時間を短縮するこができる。Fig. 2 is a diagram showing the effect of coarse crushing on the oxidation of the sintered pellets. At the oxidation time of 60 minutes, the oxidation powdering ratio in the pellet state is about 60% &, while the pellets are coarsened to 5 mm or more. The oxidization powder ratio after crushing is almost 100%. From the above, the oxidation time can be shortened by roughly crushing the sintered pellets and then oxidizing them.
なお、熱処理器内で、被酸化物を搬送する搬送装置はベ
ルトコンベア７に限らず、被酸化物を搬送しうるもので
あれば、いかなるものでもよい。また、被酸化物が飛散
した時に、外周辺への漏洩れを防止するため系全体を覆
うフートー16は、系全体を覆うものでなくともよく、飛
散しうる可能性のある箇所にだけフード16を設ける構造
にすることもできる。The transport device for transporting the oxide in the heat treatment device is not limited to the belt conveyor 7 and may be any device as long as it can transport the oxide. In addition, the foot toe 16 that covers the entire system in order to prevent leakage to the outside when the oxides are scattered does not have to cover the entire system, and the hood 16 can be placed only at the places where it can be scattered. It is also possible to adopt a structure in which
本発明は上述のように構成したので、焼結ペレットを粗
粉砕した後、酸化することにより、酸化時間を短縮する
ことができ、また、微粉砕した被酸化物を分級機で分級
することにより、未酸化の原料粗粒がふるい上に滞留す
ること、および製品缶に混入することを防止することが
できる。また、粗粉砕、酸化、微粉砕の各工程が一連で
行われるので全体の作業効率を向上できる等の効果を奏
する。Since the present invention is configured as described above, after roughly pulverizing the sintered pellets, by oxidizing, it is possible to shorten the oxidation time, and by finely pulverizing the oxide to be classified by a classifier. It is possible to prevent the unoxidized raw material coarse particles from staying on the sieve and from being mixed in the product can. Further, since each step of coarse pulverization, oxidation and fine pulverization is performed in series, there is an effect that the overall work efficiency can be improved.
第１図は酸化粉末製造装置図、第２図は焼結ペレットの
酸化に対する粗粉砕効果の説明図である。 １…原料供給缶、２…バランスローダ、３…供給ホッ
パ、４…供給フィーダ、５…粗粉砕機、６…熱処理器、
７…ベルトコンベア、８…微粉砕機、９…分級機、10…
フィーダ、11…製品缶、12…計量器、13…溜缶、14…ブ
ロア、15…排気管、16…フード、17…コンベア駆動部。FIG. 1 is a diagram of an oxide powder manufacturing apparatus, and FIG. 2 is an explanatory diagram of a coarse crushing effect on oxidation of sintered pellets. 1 ... Raw material supply can, 2 ... Balance loader, 3 ... Supply hopper, 4 ... Supply feeder, 5 ... Coarse crusher, 6 ... Heat treatment device,
7 ... Belt conveyor, 8 ... Fine crusher, 9 ... Classifier, 10 ...
Feeder, 11 ... Product can, 12 ... Measuring device, 13 ... Reservoir, 14 ... Blower, 15 ... Exhaust pipe, 16 ... Hood, 17 ... Conveyor drive unit.
Claims (1)
造装置において、原料焼結ペレットを粗粉砕するための
粗粉砕機と、上記粗粉砕機の下方に設けられ、原料焼結
ペレットを粗粉砕した粗粉砕粒を酸化するための熱処理
器と、原料焼結ペレットを粗粉砕した粗粉砕粒を搬送す
るために、上記熱処理器内部に設けられた搬送装置と、
上記搬送装置終端部下方でかつ熱処理器外部に設けら
れ、酸化された粗粉砕粒を微粉砕するための微粉砕機を
有することを特徴とする酸化粉末製造装置。1. An oxide powder production apparatus for converting a sintered pellet into an oxidized powder, wherein a coarse crusher for coarsely crushing the raw material sintered pellet and a coarse crusher provided below the coarse crusher for converting the raw material sintered pellet into a coarse powder. A heat treatment device for oxidizing the crushed coarsely crushed particles, and a conveying device provided inside the heat treatment device in order to convey the coarsely crushed particles obtained by roughly crushing the raw material sintered pellets,
An oxidized powder manufacturing apparatus, comprising a fine crusher for finely crushing oxidized coarsely crushed particles, which is provided below the end of the conveying device and outside the heat treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162778A JPH0717365B2 (en) | 1986-07-10 | 1986-07-10 | Oxide powder manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162778A JPH0717365B2 (en) | 1986-07-10 | 1986-07-10 | Oxide powder manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6321228A JPS6321228A (en) | 1988-01-28 |
| JPH0717365B2 true JPH0717365B2 (en) | 1995-03-01 |
Family
ID=15761035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61162778A Expired - Fee Related JPH0717365B2 (en) | 1986-07-10 | 1986-07-10 | Oxide powder manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0717365B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2895137B1 (en) * | 2005-12-19 | 2008-02-15 | Commissariat Energie Atomique | PROCESS FOR MANUFACTURING DENSE MATERIAL FOR NUCLEAR FUEL AND PRODUCT CAPABLE OF OBTAINING THE SAME. |
| FR2894954B1 (en) * | 2005-12-19 | 2008-02-15 | Commissariat Energie Atomique | PROCESS FOR MANUFACTURING PARTICULATE MATTER AND PARTICULATE MATERIAL CAPABLE OF OBTAINING THE SAME |
| CN102502518B (en) * | 2011-10-13 | 2014-01-22 | 先进储能材料国家工程研究中心有限责任公司 | Improved oxidation furnace for producing oxide powder material |
| CN118047354A (en) * | 2024-01-19 | 2024-05-17 | 广东长信精密设备有限公司 | A system for preparing oxide powder |
-
1986
- 1986-07-10 JP JP61162778A patent/JPH0717365B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6321228A (en) | 1988-01-28 |
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